2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT — Full Specifications, Performance, and Comparison
The 2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT represents one of the most reliable and high-performance motocross engines available for the YZ450 platform. This engine motor has only 4 hours of total use, ensuring it is practically new and ready for immediate installation, making it an ideal choice for riders seeking a high-quality replacement or performance upgrade.
Engine Overview
The 2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT is a high-output 450cc, liquid-cooled, single-cylinder, four-stroke engine. It is designed for maximum power delivery, reliability, and race-ready performance. Yamaha’s advanced engineering ensures a balance of torque, top-end power, and smooth acceleration across a wide RPM range.
Key engine specifications:
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Displacement: 449 cc
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Bore x Stroke: 97 mm × 60.8 mm
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Compression Ratio: 12.8:1
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Cooling System: Liquid-cooled
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Fuel Delivery: Fuel Injection (Yamaha Fuel Injection – YFI)
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Ignition: TCI (Transistor Controlled Ignition)
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Starter: Electric start
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Transmission: 5-speed close-ratio
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Clutch: Wet multi-plate hydraulic
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Engine Status: Complete running motor, 4 hours total usage
The engine has been meticulously maintained, and its 4 HOURS TOTAL MINT condition guarantees minimal wear, ensuring longevity and high performance.
Performance and Reliability
The 2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT delivers a powerful, race-ready performance. The high-compression four-stroke design provides strong torque at low RPMs and explosive power at higher revs, perfect for motocross racing or off-road applications.
Performance highlights:
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Smooth and responsive power delivery
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Excellent throttle response thanks to Yamaha Fuel Injection
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High-reliability components designed for aggressive use
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Minimal maintenance required due to low total hours
Because this engine is essentially brand new with only 4 hours of use, it provides a rare opportunity to own a YZ450F engine motor without the break-in period or wear concerns typical of used engines.
Chassis Compatibility and Installation
The 2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT is compatible with the YZ450F 2018 model frame and can also fit other late-model YZ450F bikes with minor adjustments.
Key installation features:
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Complete running motor, ready for direct installation
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Includes all necessary mounting points and components
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Maintains stock performance characteristics
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Minimal modification required for aftermarket parts compatibility
This makes the engine ideal for racers, enthusiasts, or anyone looking to upgrade or replace a worn-out YZ450F engine.
Comparison With Related Products
YZ450F 2018 vs KTM 450 SX-F Engine:
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Yamaha’s engine is known for smoother power delivery and lower mid-range heat generation
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KTM engines often offer slightly higher peak horsepower but require more frequent maintenance
YZ450F 2018 vs Honda CRF450R Engine:
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Honda engines are very reliable but heavier than the Yamaha YZ450F
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Yamaha offers better aftermarket support and parts availability for older models
YZ450F 2018 vs Suzuki RM-Z450 Engine:
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Suzuki engines deliver competitive power but have a shorter maintenance interval
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Yamaha’s 4 HOURS TOTAL MINT condition provides a significant advantage in longevity
Overall, the 2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT stands out as one of the most accessible and high-value options in the 450cc four-stroke motocross engine market.
Maintenance and Longevity
Owning a 2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT provides peace of mind due to its low usage hours and high build quality. Routine maintenance should include:
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Oil changes every 10–15 hours of riding
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Air filter servicing
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Periodic inspection of valves, cam chain, and clutch plates
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Fuel system checks for injector cleanliness
With only 4 HOURS TOTAL MINT, this engine is expected to offer years of reliable performance under normal racing and recreational conditions.
Pricing and Market Value
Used 2018 YZ450F engines typically range from $2,500 to $3,500 depending on condition and hours. The 2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT commands a premium due to its extremely low hours and “like-new” condition, making it a smart investment for serious riders.
Final Verdict
For racers, off-road enthusiasts, or anyone needing a replacement motor, the 2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT is an exceptional choice. With minimal usage, high reliability, and race-ready performance, it offers a rare opportunity to acquire a nearly new YZ450 engine at a fraction of the cost of a brand-new bike.
This engine guarantees performance, longevity, and immediate installation readiness, making it one of the most valuable 450cc four-stroke engines on the market today.













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Theo H. –
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Jack T. –
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Leon M. –
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Ambre L. –
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Lina R. –
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Alexandre M. –
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Matteo M. –
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George D. –
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Camila G. –
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Noah K. –
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Finn W. –
Greetings from Switzerland. The 2018 Yamaha YZ450F Complete Running Engine Motor YZ450 4 HOURS TOTAL MINT. has arrived safely and I am so thankful. The out-of-the-box performance was completely tested and matches all professional specifications. Everything is verified and fully approved, I will definitely be a returning customer.
Zoey M. –
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